EP1030986A1 - Sealing device - Google Patents

Sealing device

Info

Publication number
EP1030986A1
EP1030986A1 EP99936278A EP99936278A EP1030986A1 EP 1030986 A1 EP1030986 A1 EP 1030986A1 EP 99936278 A EP99936278 A EP 99936278A EP 99936278 A EP99936278 A EP 99936278A EP 1030986 A1 EP1030986 A1 EP 1030986A1
Authority
EP
European Patent Office
Prior art keywords
sealing
clamping
edges
steel sheet
spring steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99936278A
Other languages
German (de)
French (fr)
Other versions
EP1030986B1 (en
Inventor
Wilfried Starke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP1030986A1 publication Critical patent/EP1030986A1/en
Application granted granted Critical
Publication of EP1030986B1 publication Critical patent/EP1030986B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0887—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing the sealing effect being obtained by elastic deformation of the packing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/18—Leaf springs
    • F16F1/185—Leaf springs characterised by shape or design of individual leaves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/18—Leaf springs
    • F16F1/26—Attachments or mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0887—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing the sealing effect being obtained by elastic deformation of the packing
    • F16J15/0893—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing the sealing effect being obtained by elastic deformation of the packing the packing having a hollow profile

Definitions

  • the invention relates to a device for sealing the contact zone between two relatively movable system parts, one of which forms a shut-off element and the other a sealing seat.
  • a movable shut-off element e.g. a swivel wing or a slide plate
  • Hot gas pipeline of large dimensions built-in shut-off device and a fixed seat in the housing of this shut-off device to ensure a reliable gas-tight seal.
  • Such hot gas pipelines often have diameters or cross-sectional diagonals of several meters in size.
  • DE 195 21 916 A1 discloses a generic device for sealing the contact zone between a movable shut-off element and a stationary seat.
  • This device contains a sealing element which is formed from a spring steel sheet strip and can optionally be attached to the movable shut-off element or to the stationary sealing seat or to both. It extends along the contact zone of the sealing seat and shut-off element and is bent in the shape of a hollow profile in such a way that the spring steel sheet strip is convexly curved outwards in the region of the contact zone. The curvature is usually generated by a corresponding deformation in the elastic region of the spring steel material.
  • the two longitudinal edges of the spring steel sheet strip form tensioning rims which are each firmly clamped to one of the two system parts (sealing seat or shut-off element) at a distance from one another which is at least 10% of the width of the sealing element.
  • the tensioning edges point to the same side and are parallel to each other.
  • the spring steel sheet strip shows in addition to that caused by elastic deformation Curvature in the area of the arcuate sealing zone still two bends by 90%, which were generated by plastic deformation of the spring steel sheet strip.
  • Either both bends are arranged in the area between one of the two clamping edges and the arcuate sealing zone and are angled at an opposite angle, or they are arranged on different sides between the arcuate sealing zone and the respective clamping edge and point to the same side.
  • the distance between the two parallel clamping edges, which are clamped by means of a clamping strip, is ensured by a support element placed between the clamping wheels, which depending on the arrangement of the bends along one or both clamping edges either as L-
  • This support element thus lies inside the cavity formed by the bent spring steel sheet strip.
  • the support element is intended to prevent the spring steel sheet strip from being lifted off during the closing process of the shut-off element. This device is specifically for such
  • Sealing zone is also known from DE 38 15 402 A1. These devices are used in particular for sealing in flue gas pipelines. With the usual dimensions of the spring steel sheet strip, its elasticity in the region of the curved sealing zone is such that spring travel of up to approximately 10 mm is possible. This means that the thermal expansion due to the
  • Temperature influence of the hot flue gas on the shut-off device can be compensated for shut-off elements of up to 3x3 m in size.
  • the compensation capacity of this known sealing device is no longer sufficient for very large flue gas duct cross sections of, for example, 5 ⁇ 7 m.
  • a suitable sealing device for flue gas fittings must not only have sufficient elasticity, that is, sufficient spring travel to compensate for the thermal expansions to be expected, but must also have sufficient rigidity.
  • the sealing device In the unloaded state, ie in the event that the Shut-off elements, the sealing device is namely exposed to the extraordinarily strong flow of the flue gas. If the stiffness is too low, the flowing flue gas causes the sealing device to vibrate, which in the long run will destroy it.
  • the object of the present invention is to design a generic device for sealing so that considerably larger spring travel than before, in particular spring travel up to 30 mm, is possible in order to be able to compensate for extremely strong thermal expansions without the stiffness of the seal being impermissible decreases.
  • the invention provides for the maintenance of a curved sealing zone.
  • the spring steel sheet strip is, however, bent in the area of the sealing zone essentially by plastic deformation in the form of a roof ridge with roof surfaces adjoining on both sides, while in the known sealing device there is an elastically curved sealing zone.
  • the roof surfaces are preferably essentially flat, but can also have a slight curvature inwards or outwards. In such a case, in addition to the plastic deformation, the bending of the ridge also has a certain component of elastic deformation.
  • the two roof surfaces are at an angle of approximately 60 ° to 160 ° to one another, preferably at an angle of 90 ° to 130 ° and particularly preferably at an angle of 105 ° to 115 °.
  • the spring steel sheet strip of the sealing device according to the invention each has a further bend which is produced by plastic deformation and is convex toward the outside. This convex
  • Bending is in each case followed by a substantially flat side surface, at least in a first section, the clamping edge being arranged on the free longitudinal edge of this side surface.
  • the two clamping edges are preferably directed parallel to one another. However, this is not a mandatory feature.
  • the clamping edges could also run obliquely towards one another. As a distance In such a case, the distance between the two clamping edges would be that which is present at the beginning of the clamping edge, that is to say in the region of the clamping edge which is closest to the sealing zone.
  • the distance between the two clamping edges must be at least 10%, preferably at least 20% and particularly preferably at least 30% of the width of the sealing element.
  • the width of the sealing element is the distance between the opposing convex bends on the longitudinal edges of the two roof surfaces facing away from the roof ridge. This upper distance is expediently limited to 50% of the width of the sealing element.
  • the two side surfaces adjoining the roof surfaces can each be completely flat and directed parallel to one another.
  • the preferred embodiment provides for a further one in the area of the side faces
  • the space between the two clamping edges is expediently filled by a solid or hollow profile with a rectangular cross section.
  • the rectangular cross-section ensures that the two clamping edges run parallel.
  • a hollow profile is more advantageous, particularly to save weight.
  • the two clamping edges would preferably be clamped between such a solid or hollow profile and two clamping strips which are placed parallel to this profile and are clamped, for example, by means of screws.
  • one of the two terminal strips with simple through holes for the screws used, while the other terminal block is provided with threaded holes so that the screws used for tensioning each through corresponding through holes of one terminal block, the two clamping edges and the profile lying between the clamping edges can be inserted and screwed into the threaded hole of the other terminal block.
  • the sealing device can be preassembled with the least possible effort.
  • the screws used should protrude through a free thread length through the threaded holes so that this free thread length can be fastened by means of an additional nut for attachment to the respective system part of the flue gas fitting, i.e. to the fixed sealing seat or to the moving flap wing.
  • the terminal strips used expediently each have a rounded longitudinal edge on the side abutting the respective clamping edge. As a result, the clamping point allows the spring steel sheet strip to be deformed more gently.
  • the tensioning strip is preferably applied in such a way that the rounded longitudinal edge lies in the region of the concave bend of the spring steel sheet strip.
  • it can be provided to support the flat section of the side surfaces of the convex and concave bend outwards over a partial area, for example by extending the respective tensioning strip into this area and not as a flat bar, but rather as a corresponding angle profile becomes.
  • the installation of resilient support plates is also possible.
  • the sealing device according to the invention makes it surprisingly simple
  • the device is not only easy to preassemble, but can also be finally assembled using simple means. By enabling very long spring travel, extreme temperature expansions due to the influence of flue gas can be safely controlled.
  • the invention is not only easy to preassemble, but can also be finally assembled using simple means. By enabling very long spring travel, extreme temperature expansions due to the influence of flue gas can be safely controlled.
  • Sealing device such a high spring stiffness that inadmissible natural vibrations due to the strong flue gas flow remain.
  • FIG. 1 shows a first embodiment of the sealing device according to the invention in cross section in the unloaded and in the loaded state
  • FIG. 2 shows a modification of the sealing device from FIG. 1
  • Fig. 3 shows a sealing device with completely flat side walls
  • Fig. 4 shows a sealing device according to FIG. 1 in the assembled state.
  • Fig. 1 shows a sealing device according to the invention in cross section.
  • the unloaded state is shown with solid lines, while the deformation that has occurred in the temperature-loaded state is indicated by dashed lines.
  • An essential element of the device according to the invention is the spring steel sheet strip 2 shown as a thick line. The upper part thereof has one
  • Sealing zone 4 which is designed in the manner of a roof ridge with two flat roof surfaces 5.
  • the bend in the sealing zone 4 has been produced by plastic deformation of the spring steel sheet strip 2.
  • a further outwardly convex bend 6 is arranged on the longitudinal edges of the roof surfaces 5 facing away from the sealing zone. This is followed by side surfaces 7, which are in a first
  • the two clamping edges of the spring steel sheet strip are designated by the reference number 3 and are aligned plane-parallel to one another.
  • a further bend 8 is provided in each of the side surfaces 7, which was also produced by plastic deformation, but is not convex, but is concave to the outside.
  • a rectangular hollow profile 9 has been inserted between them.
  • the spring steel sheet strip 2 forms in this way
  • the two terminal strips 10, 1 1 each have a rounded longitudinal edge, the radius of curvature of which is adapted to the radius of curvature of the concave bend 8.
  • the two terminal strips 10, 1 1 extend with their rounded longitudinal edge into the region of the bend 8.
  • the reference number 1 denotes a piece of a shut-off element which bears against the curved sealing zone 4 while exerting a sealing force.
  • dashed form is the situation of the deformation of the spring steel sheet strip 2 due to a strong thermal expansion has been shown.
  • the sealing zone 4 Under the pressure of the shut-off element 1, the sealing zone 4 is shifted downward, so that on the one hand there is an increase in the angle in the area of the roof ridge and on the other hand there is a decrease in the angle in the area of the two bends 6. It can be clearly seen that the sealing device according to the invention allows a very large spring travel despite its compact design. The spring stiffness is still too great that, despite high flue gas speeds, no inadmissible vibrations of the spring steel sheet strip 2 occur, which could lead to its premature destruction.
  • the sealing device shown in Fig. 2 largely resembles the embodiment of Fig. 1. It differs only in that the two terminal strips 10, 1 1 with their rounded edges do not extend into the area of the concave bends, but end shortly before. In this way, the spring stiffness can be reduced in a targeted manner. Conversely, the spring stiffness could, if necessary
  • FIG. 3 An extreme case in this regard is shown in FIG. 3.
  • the two clamping edges 3 are at a distance from one another which corresponds to the width of the sealing element.
  • the two side surfaces 7 are each completely flat, that is to say do not have a concave bend.
  • FIG. 4 shows the sealing device according to the invention, the design of which corresponds to FIG. 1, in the assembled state.
  • the clamping edges of the spring steel sheet strip 2 are clamped by means of a screw 12 between the two terminal strips 10, 1 1 and the hollow profile 9 arranged between them.
  • the terminal strip 11 has a threaded hole suitable for the thread of the screw 12.
  • the sealing device can be provided in a preassembled form without using a separate nut.
  • this seal is given in predefined Part lengths of, for example, 2m length made and only assembled during assembly to the desired overall length in the respective flue gas valve.
  • the plant part to which the sealing device is to be attached is provided with the reference symbol 13 in FIG. 4.
  • the hollow profile 9 and the terminal strip 10 it has a through hole suitable for the screw 12.
  • the screw 12 is made much longer than would be necessary for screwing with the threaded hole in the terminal block 11. Therefore, the free ends of the screw 12 can be inserted into these through holes on the system part 13 and firmly clamped to the latter by means of nuts 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
  • Glass Compositions (AREA)
  • Seal Device For Vehicle (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Abstract

A device for sealing the contact zone between two parts that are movable with respect to each other, of which one forms a shut-off element (1) and the other a sealing seat, contains at least one sealing element formed by a resilient steel strip (2) that extends along the contact zone, is curved to form a hollow section and of which the two longitudinal edges form clamping edges (3) clamped on one of the two parts in contact at a distance from one another equal to at least 10 % of the width of the sealing element. In the closure position of the shut-off element, a sealing zone (4) of the sealing element, which is convex with respect to the sealing seat, is pressed on the sealing seat by a sealing force exercised by the spring. The sealing zone (4) of the resilient steel strip (2) is plastically bent into the shape of a roof with a ridge and two adjacent roof surfaces (5) that enclose an angle from 60 DEG to 160 DEG . The longitudinal edges of the two roof surfaces (5) away from the roof ridge are plastically bent outward to form another convex bend (6) adjacent to a side surface (7) which is flat at least in a first section and on the free longitudinal edge of which the clamping edge (3) is arranged.

Description

Vorrichtung zur AbdichtungSealing device
Beschreibungdescription
Die Erfindung betrifft eine Vorrichtung zur Abdichtung der Berührungszone zwischen zwei relativ zueinander beweglichen Anlagenteilen, von denen der eine ein Absperrelement und der andere einen Dichtsitz bildet.The invention relates to a device for sealing the contact zone between two relatively movable system parts, one of which forms a shut-off element and the other a sealing seat.
Vorrichtungen dieser Art dienen insbesondere dazu, zwischen einem beweglichen Absperrelement (z.B. einem Schwenkflügel oder einer Schieberplatte) einer in eineDevices of this type are used, in particular, to move one into a between a movable shut-off element (e.g. a swivel wing or a slide plate)
Heißgasrohrleitung großer Abmessung eingebauten Absperreinrichtung und einem ortsfesten Sitz im Gehäuse dieser Absperreinrichtung eine zuverlässige gasdichte Abdichtung zu gewährleisten. Solche Heißgasrohrleitungen weisen vielfach Durchmesser oder Querschnittsdiagonalen von mehreren Metern Größe auf.Hot gas pipeline of large dimensions built-in shut-off device and a fixed seat in the housing of this shut-off device to ensure a reliable gas-tight seal. Such hot gas pipelines often have diameters or cross-sectional diagonals of several meters in size.
Aus der DE 195 21 916 A1 ist eine gattungsgemäße Vorrichtung zur Abdichtung der Berührungszone zwischen einem beweglichen Absperrelement und einem ortsfesten Sitz bekannt. Diese Vorrichtung enthält ein Dichtungselement, das aus einem Federstahlblechstreifen gebildet ist und wahlweise an dem beweglichen Absperrelement oder an dem ortsfesten Dichtsitz oder auch an beiden befestigt sein kann. Es erstreckt sich entlang der Berührungszone von Dichtsitz und Absperrelement und ist hohlprofilförmig in der Weise gebogen, daß der Federstahlblechstreifen im Bereich der Berührungszone konvex nach außen gewölbt ist. Die Wölbung wird üblicherweise durch eine entsprechende Verformung im elastischen Bereich des Federstahlwerkstoffs erzeugt. Die beiden Längskanten des Federstahlblechstreifens bilden Spannränder, die jeweils an einem der beiden Anlagenteile (Dichtsitz oder Absperrelement) mit einem Abstand zueinander, der mindestens 10% der Breite des Dichtungselements beträgt, fest eingespannt sind. Die Spannränder weisen jeweils zur selben Seite und liegen parallel zueinander. Im montierten Zustand weist der Federstahlblechstreifen außer der durch elastische Verformung hervorgerufenen Krümmung im Bereich der bogenförmigen Dichtzone noch zwei Biegungen um jeweils 90% auf, die durch plastische Verformung des Federstahlblechstreifens erzeugt wurden. Entweder sind beide Biegungen in dem Bereich zwischen einem der beiden Spannränder und der bogenförmigen Dichtzone angeordnet und sind mit einem gegenläufigen Winkel abgewinkelt oder aber sie sind auf verschiedenen Seiten zwischen der bogenförmigen Dichtzone und dem jeweiligen Spannrand angeordnet und weisen zur gleichen Seite. Der Abstand zwischen den beiden parallelen Spannrändern, die mittels einer Klemmleiste festgespannt werden, wird durch ein zwischen die Spannräder gelegtes Stützelement gewährleistet, das je nach Anordnung der Biegungen entlang eines oder aber entlang beider Spannränder entweder als L-DE 195 21 916 A1 discloses a generic device for sealing the contact zone between a movable shut-off element and a stationary seat. This device contains a sealing element which is formed from a spring steel sheet strip and can optionally be attached to the movable shut-off element or to the stationary sealing seat or to both. It extends along the contact zone of the sealing seat and shut-off element and is bent in the shape of a hollow profile in such a way that the spring steel sheet strip is convexly curved outwards in the region of the contact zone. The curvature is usually generated by a corresponding deformation in the elastic region of the spring steel material. The two longitudinal edges of the spring steel sheet strip form tensioning rims which are each firmly clamped to one of the two system parts (sealing seat or shut-off element) at a distance from one another which is at least 10% of the width of the sealing element. The tensioning edges point to the same side and are parallel to each other. In the assembled state, the spring steel sheet strip shows in addition to that caused by elastic deformation Curvature in the area of the arcuate sealing zone still two bends by 90%, which were generated by plastic deformation of the spring steel sheet strip. Either both bends are arranged in the area between one of the two clamping edges and the arcuate sealing zone and are angled at an opposite angle, or they are arranged on different sides between the arcuate sealing zone and the respective clamping edge and point to the same side. The distance between the two parallel clamping edges, which are clamped by means of a clamping strip, is ensured by a support element placed between the clamping wheels, which depending on the arrangement of the bends along one or both clamping edges either as L-
Profil bzw. als einfaches Flacheisen ausgeführt ist. Damit liegt dieses Stützelement im Inneren des von dem durch den gebogenen Federstahlblechstreifen gebildeten Hohlraums. Durch das Stützelement soll bei dieser bekannten Vorrichtung ein Abheben des Federstahlblechstreifens während des Schließvorgangs des Absperreiements vermieden werden. Diese Vorrichtung ist nämlich speziell für solcheProfile or is designed as a simple flat iron. This support element thus lies inside the cavity formed by the bent spring steel sheet strip. With this known device, the support element is intended to prevent the spring steel sheet strip from being lifted off during the closing process of the shut-off element. This device is specifically for such
Einsatzfälle vorgesehen, bei denen während des Schließens des Absperrelements starke tangentiale Reibungskräfte zur gewölbten Dichtzone auftreten. Die eigentliche Dichtkraft verläuft wie üblich in senkrechter Richtung zur Dichtzone.Applications are provided in which strong tangential frictional forces occur to the curved sealing zone during the closing of the shut-off element. The actual sealing force is, as usual, perpendicular to the sealing zone.
Ein aus einem Federstahlblechstreifen gebildetes Hohlprofil mit elastisch gewölbterA hollow profile made of a spring steel sheet strip with an elastically curved
Dichtzone ist auch aus der DE 38 15 402 A1 bekannt. Diese Vorrichtungen werden insbesondere zur Abdichtung in Rauchgasrohrleitungen verwendet. Bei den üblichen Abmessungen des Federstahlblechstreifens ist dessen Elastizität im Bereich der bogenförmig gekrümmten Dichtungszone derartig, daß Federwege bis zu etwa 10mm möglich sind. Das bedeutet, daß die thermischen Dehnungen infolge desSealing zone is also known from DE 38 15 402 A1. These devices are used in particular for sealing in flue gas pipelines. With the usual dimensions of the spring steel sheet strip, its elasticity in the region of the curved sealing zone is such that spring travel of up to approximately 10 mm is possible. This means that the thermal expansion due to the
Temperatureinflusses des heißen Rauchgases an der Absperreinrichtung bei Absperrelementen von bis zu 3x3 m Größe kompensiert werden könne. Nicht mehr ausreichend ist das Kompensationsvermögen dieser bekannten Dichtvorrichtung bei sehr großen Rauchgaskanalquerschnitten von beispielsweise 5x7m.Temperature influence of the hot flue gas on the shut-off device can be compensated for shut-off elements of up to 3x3 m in size. The compensation capacity of this known sealing device is no longer sufficient for very large flue gas duct cross sections of, for example, 5 × 7 m.
Eine geeignete Dichtvorrichtung für Rauchgasarmaturen muß nicht nur genügend Elastizität, also genügend Federweg zum Ausgleich der zu erwartenden thermischen Dehnungen aufweisen, sondern muß darüber hinaus auch eine ausreichende Steifigkeit besitzen. Im unbelasteten Zustand, d.h. im Falle des Nichtanliegens des Absperrelements, ist die Dichtvorrichtung nämlich der außerordentlich starken Strömung des Rauchgases ausgesetzt. Bei zu geringer Steifigkeit führt das strömende Rauchgas zu Eigenschwingungen der Dichtvorrichtung, die diese auf die Dauer zerstören.A suitable sealing device for flue gas fittings must not only have sufficient elasticity, that is, sufficient spring travel to compensate for the thermal expansions to be expected, but must also have sufficient rigidity. In the unloaded state, ie in the event that the Shut-off elements, the sealing device is namely exposed to the extraordinarily strong flow of the flue gas. If the stiffness is too low, the flowing flue gas causes the sealing device to vibrate, which in the long run will destroy it.
Aufgabe der vorliegenden Erfindung ist es, eine gattungsgemäße Vorrichtung zur Abdichtung so zu gestalten, daß erheblich größere Federwege als bisher, insbesondere Federwege bis zu 30mm, möglich sind, um extrem starke thermische Dehnungen kompensieren zu können, ohne daß die Steifigkeit der Dichtung in unzulässiger Weise abnimmt.The object of the present invention is to design a generic device for sealing so that considerably larger spring travel than before, in particular spring travel up to 30 mm, is possible in order to be able to compensate for extremely strong thermal expansions without the stiffness of the seal being impermissible decreases.
Gelöst wird diese Aufagbe für eine gattungsgemäße Vorrichtung mit den kennzeichnenden Merkmalen des Patentanspruchs 1. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen 2 bis 12 angegeben.This task is solved for a generic device with the characterizing features of patent claim 1. Advantageous further developments of the invention are specified in subclaims 2 to 12.
Ausgehend von der gattungsgemäßen Abdichtungsvorrichtung sieht die Erfindung zwar die Beibehaltung einer gebogenen Dichtungszone vor. Der Federstahlblechstreifen ist aber im Bereich der Dichtungszone im wesentlichen durch plastische Verformung in Form eines Dachfirstes mit sich beidseitig anschließenden Dachflächen gebogen, während bei der bekannten Dichtvorrichtung eine elastisch gebogene Dichtungszone vorliegt. Die Dachflächen sind vorzugsweise im wesentlichen eben ausgebildet, können aber auch eine leichte Wölbung nach innen oder außen aufweisen. In einem solchen Fall weist die Biegung des Dachfirstes allerdings neben der plastischen Verformung auch eine gewisse Komponente an elastischer Verformung auf. Die beiden Dachflächen stehen erfindungsgemäß in einem Winkel von etwa 60° bis 160° zueinander, vorzugsweise in einem Winkel von 90° bis 130° und besonders bevorzugt in einem Winkel von 105° bis 115°. An der dem Dachfirst abgewandten Längskante der beiden Dachflächen weist der Federstahlblechstreifen der erfindungsgemäßen Abdichtvorrichtung jeweils eine weitere durch plastische Verformung erzeugte und nach außen hin konvexe Biegung auf. An diese konvexeStarting from the generic sealing device, the invention provides for the maintenance of a curved sealing zone. The spring steel sheet strip is, however, bent in the area of the sealing zone essentially by plastic deformation in the form of a roof ridge with roof surfaces adjoining on both sides, while in the known sealing device there is an elastically curved sealing zone. The roof surfaces are preferably essentially flat, but can also have a slight curvature inwards or outwards. In such a case, in addition to the plastic deformation, the bending of the ridge also has a certain component of elastic deformation. According to the invention, the two roof surfaces are at an angle of approximately 60 ° to 160 ° to one another, preferably at an angle of 90 ° to 130 ° and particularly preferably at an angle of 105 ° to 115 °. On the longitudinal edge of the two roof surfaces facing away from the roof ridge, the spring steel sheet strip of the sealing device according to the invention each has a further bend which is produced by plastic deformation and is convex toward the outside. This convex
Biegung schließt sich jeweils eine zumindest in einem ersten Teilstück im wesentlichen ebene Seitenfläche an, wobei an der freien Längskante dieser Seitenfläche jeweils der Spannrand angeordnet ist. Vorzugsweise sind die beiden Spannränder parallel zueinander gerichtet. Dies ist allerdings kein zwingend notwendiges Merkmal. Die Spannränder könnten beispielsweise auch schräg aufeinander zulaufen. Als Abstand der beiden Spannränder würde in einem solchen Fall derjenige Abstand gelten, der am Anfang des Spannrandes, also in dem der Dichtungszone am nächsten liegenden Bereich des Spannrandes vorliegt.Bending is in each case followed by a substantially flat side surface, at least in a first section, the clamping edge being arranged on the free longitudinal edge of this side surface. The two clamping edges are preferably directed parallel to one another. However, this is not a mandatory feature. For example, the clamping edges could also run obliquely towards one another. As a distance In such a case, the distance between the two clamping edges would be that which is present at the beginning of the clamping edge, that is to say in the region of the clamping edge which is closest to the sealing zone.
Der Abstand er beiden Spannränder voneinander muß mindestens 10%, vorzugsweise mindestens 20% und besonders bevorzugt mindestens 30% der Breite des Dichtungselements betragen. Die Breite des Dichtungselements ist der Abstand der einander gegenüberliegenden konvexen Biegungen an den dem Dachfirst abgewandten Längskanten der beiden Dachflächen. Zweckmäßigerweise wird dieser Abstand nach oben auf 50% der Breite des Dichtungselements begrenzt. Es ist aber auch möglich, den Abstand der beiden Spannränder größer zu machen, beispielsweise genau so groß wie die Breite des Dichtungselements. In einem solchen Fall können die beiden sich an die Dachflächen anschließenden Seitenflächen jeweils vollständig eben und parallel zueinander gerichtet ausgebildet sein. Die bevorzugte Ausführungsform sieht jedoch vor, im Bereich der Seitenflächen jeweils eine weitereThe distance between the two clamping edges must be at least 10%, preferably at least 20% and particularly preferably at least 30% of the width of the sealing element. The width of the sealing element is the distance between the opposing convex bends on the longitudinal edges of the two roof surfaces facing away from the roof ridge. This upper distance is expediently limited to 50% of the width of the sealing element. However, it is also possible to make the distance between the two clamping edges larger, for example exactly as large as the width of the sealing element. In such a case, the two side surfaces adjoining the roof surfaces can each be completely flat and directed parallel to one another. However, the preferred embodiment provides for a further one in the area of the side faces
Biegung anzuordnen, die allerdings nach außen hin nicht konvex, sondern konkav geformt ist. Auch diese weitere Biegung, die in Längsrichtung des Federstahlblechstreifens verläuft, wird durch eine plastische Verformung angebracht.Arrange the bend, which, however, is not convex on the outside, but concave. This further bend, which runs in the longitudinal direction of the spring steel sheet strip, is also brought about by plastic deformation.
Um den gewünschten Abstand der beiden Spannränder voneinander einzuhalten, wird zweckmäßigerweise der Zwischenraum zwischen den beiden Spannrändern durch ein Voll- oder Hohlprofil mit rechteckigem Querschnitt ausgefüllt. Der rechteckige Querschnitt gewährleistet den parallelen Verlauf der beiden Spannränder. Bei kleineren Abständen empfiehlt sich die Verwendung eines Vollprofils, während für größere Abmessungen insbesondere zur Gewichtseinsparung ein Hohprofil vorteilhafter ist. Vorzugsweise würden die beiden Spannränder zwischen einem solchen Voll- oder Hohlprofil und zwei Klemmleisten eingespannt, die parallel zu diesem Profil angelegt werden und z.B. mittels Schrauben verspannt werden. In diesem Zusammenhang ist es besonders empfehlenswert, die eine der beiden Klemmleisten mit einfachen Durchgangsbohrungen für die verwendeten Schrauben zu versehen, während die andere Klemmleiste mit Gewindebohrungen ausgestattet wird, so daß die zum Verspannen eingesetzten Schrauben jeweils durch entsprechende Durchgangslöcher der einen Klemmleiste, der beiden Spannränder und des zwischen den Spannrändern liegenden Profils hindurchgesteckt und in die Gewindebohrung der anderen Klemmleiste eingeschraubt werden können. Auf diese Weise kann die Abdichtvorrichtung mit geringstmöglichem Aufwand fertig vormontiert werden. Die verwendeten Schrauben sollten dabei um eine freie Gewindelänge durch die Gewindebohrungen hindurchragen, damit diese freie Gewindelänge zur Befestigung am jeweiligen Anlagenteil der Rauchgasarmatur, also an dem feststehenden Dichtsitz oder an dem bewegten Klappenflügel, mittels einer zusätzlichen Mutter befestigt werden kann.In order to maintain the desired distance between the two clamping edges from one another, the space between the two clamping edges is expediently filled by a solid or hollow profile with a rectangular cross section. The rectangular cross-section ensures that the two clamping edges run parallel. For smaller distances, the use of a full profile is recommended, while for larger dimensions, a hollow profile is more advantageous, particularly to save weight. The two clamping edges would preferably be clamped between such a solid or hollow profile and two clamping strips which are placed parallel to this profile and are clamped, for example, by means of screws. In this context, it is particularly advisable to provide one of the two terminal strips with simple through holes for the screws used, while the other terminal block is provided with threaded holes so that the screws used for tensioning each through corresponding through holes of one terminal block, the two clamping edges and the profile lying between the clamping edges can be inserted and screwed into the threaded hole of the other terminal block. To this In this way, the sealing device can be preassembled with the least possible effort. The screws used should protrude through a free thread length through the threaded holes so that this free thread length can be fastened by means of an additional nut for attachment to the respective system part of the flue gas fitting, i.e. to the fixed sealing seat or to the moving flap wing.
Zweckmäßigerweise weisen die verwendeten Klemmleisten an der an dem jeweiligem Spannrand anliegenden Seite jeweils eine gerundete Längskante auf. Dadurch läßt die Einspannstelle eine sanftere Verformung des Federstahlblechstreifens zu.The terminal strips used expediently each have a rounded longitudinal edge on the side abutting the respective clamping edge. As a result, the clamping point allows the spring steel sheet strip to be deformed more gently.
Vorzugsweise wird die Spannleiste jeweils so angelegt, daß die gerundete Längskante im Bereich der konkaven Biegung des Federstahlblechstreifens liegt. Zur Erhöhung der Steifigkeit der erfindungsgemäßen Abdichtvorrichtung kann vorgesehen sein, das ebene Teilstück der Seitenflächen der konvexen und der konkaven Biegung über einen Teilbereich nach außen abzustützen, indem beispielsweise die jeweilige Spannleiste bis in diesen Bereich hinein verlängert und nicht als Flachstab, sondern als entsprechendes Winkelprofil ausgebildet wird. Alternativ ist beispielsweise auch der Einbau federelastischer Stützbleche möglich.The tensioning strip is preferably applied in such a way that the rounded longitudinal edge lies in the region of the concave bend of the spring steel sheet strip. To increase the rigidity of the sealing device according to the invention, it can be provided to support the flat section of the side surfaces of the convex and concave bend outwards over a partial area, for example by extending the respective tensioning strip into this area and not as a flat bar, but rather as a corresponding angle profile becomes. Alternatively, for example, the installation of resilient support plates is also possible.
Durch die erfindungsgemäße Abdichtvorrichtung wird mit überraschend einfachenThe sealing device according to the invention makes it surprisingly simple
Mitteln eine außerordentlich leistungsfähige Dichtung für Rauchgasarmaturen für sehr große Rauchgaskanäle bereitgestellt. Die Vorrichtung ist nicht nur leicht vormontierbar, sondern kann auch mit einfachen Mitteln endmontiert werden. Durch die Ermöglichung sehr großer Federwege lassen sich auch extreme Temperaturdehnungen infolge des Rauchgaseinflusses sicher beherrschen. Darüber hinaus besitzt die erfindungsgemäßeProvided an extremely powerful seal for flue gas fittings for very large flue gas ducts. The device is not only easy to preassemble, but can also be finally assembled using simple means. By enabling very long spring travel, extreme temperature expansions due to the influence of flue gas can be safely controlled. In addition, the invention
Abdichtvorrichtung eine so hohe Federsteifigkeit, daß unzulässige Eigenschwingungen infolge der starken Rauchgasströmung unter bleiben.Sealing device such a high spring stiffness that inadmissible natural vibrations due to the strong flue gas flow remain.
Nachfolgend wird die Erfindung anhand der in den Figuren dargestellten Ausführungsbeispiele näher erläutert. Es zeigen:The invention is explained in more detail below on the basis of the exemplary embodiments illustrated in the figures. Show it:
Fig. 1 eine erste Ausführungsform der erfindungsgemäßen Abdichtvorrichtung im Querschnitt im unbelasteten und im belasteten Zustand,1 shows a first embodiment of the sealing device according to the invention in cross section in the unloaded and in the loaded state,
Fig. 2 eine Abwandlung der Abdichtvorrichtung aus Fig. 1 , Fig. 3 eine Abdichtvorrichtung mit vollständig ebenen Seitenwänden und2 shows a modification of the sealing device from FIG. 1, Fig. 3 shows a sealing device with completely flat side walls and
Fig. 4 eine Abdichtvorrichtung gemäß Fig. 1 in montiertem Zustand.Fig. 4 shows a sealing device according to FIG. 1 in the assembled state.
Die Fig. 1 zeigt eine erfindungsgemäße Abdichtvorrichtung im Querschnitt. Der unbelastete Zustand ist dabei mit durchgezogenen Linien dargestellt, während die eingetretene Verformung im temperaturbelasteten Zustand gestrichelt angedeutet ist. Wesentliches Element der erfindungsgemäßen Vorrichtung ist der als dicke Linie dargestellte Federstahlblechstreifen 2. Dieser weist in seinem oberen Teil eineFig. 1 shows a sealing device according to the invention in cross section. The unloaded state is shown with solid lines, while the deformation that has occurred in the temperature-loaded state is indicated by dashed lines. An essential element of the device according to the invention is the spring steel sheet strip 2 shown as a thick line. The upper part thereof has one
Dichtungszone 4 auf, die in der Art eines Dachfirstes mit zwei ebenen Dachflächen 5 ausgebildet ist. Die Biegung der Dichtungszone 4 ist durch plastische Verformung des Federstahlblechstreifens 2 erzeugt worden. An den der Dichtungszone abgewandten Längskanten der Dachflächen 5 ist jeweils eine weitere nach außen konvexe Biegung 6 angeordnet. An diese schließen sich jeweils Seitenflächen 7 an, die in einem erstenSealing zone 4, which is designed in the manner of a roof ridge with two flat roof surfaces 5. The bend in the sealing zone 4 has been produced by plastic deformation of the spring steel sheet strip 2. A further outwardly convex bend 6 is arranged on the longitudinal edges of the roof surfaces 5 facing away from the sealing zone. This is followed by side surfaces 7, which are in a first
Teilstück eben geformt sind. Die beiden Spannränder des Federstahlblechstreifens sind mit dem Bezugszeichen 3 bezeichnet und sind planparallel zueinander ausgerichtet. Hierzu ist in den Seitenflächen 7 jeweils eine weitere Biegung 8 angebracht, die ebenfalls durch plastische Verformung erzeugt wurde, aber nicht konvex, sondern nach außen hin konkav geformt ist. Um die Spannränder 3 auf den gewünschten Abstand zueinander zu bringen, ist zwischen diesen ein rechteckiges Hohlprofil 9 eingelegt worden. An den Außenseiten der beiden Spannränder 3 liegt jeweils eine Klemmleiste 10 bzw. 1 1 an, so daß die Spannränder 3 zwischen dem Hohlprofil 9 und den Klemmleisten 10, 11 beispielsweise mittels Schraubverbindungen eingeklemmt werden können. Der Federstahlblechstreifen 2 bildet auf diese Weise einSection are just shaped. The two clamping edges of the spring steel sheet strip are designated by the reference number 3 and are aligned plane-parallel to one another. For this purpose, a further bend 8 is provided in each of the side surfaces 7, which was also produced by plastic deformation, but is not convex, but is concave to the outside. In order to bring the clamping edges 3 to the desired distance from one another, a rectangular hollow profile 9 has been inserted between them. On the outer sides of the two clamping edges 3 there is a clamping strip 10 or 11, respectively, so that the clamping edges 3 can be clamped between the hollow profile 9 and the clamping strips 10, 11, for example by means of screw connections. The spring steel sheet strip 2 forms in this way
Hohlprofil, dessen Querschnitt im wesentlichen rautenförmig gestaltet ist und dessen Spannränder gleichsam einen Fuß an einer Ecke der Raute des Querschnitts bilden, so daß eine einfache Montage der Abdichtvorrichtung möglich ist. Im dargestellten Ausführungsbeispiel weisen die beiden Klemmleisten 10, 1 1 jeweils eine abgerundete Längskante auf, deren Rundungsradius dem Rundungsradius der konkaven Biegung 8 angepaßt ist. Die beiden Klemmleisten 10, 1 1 reichen mit ihrer gerundeten Längskante bis in den Bereich der Biegung 8. Mit dem Bezugszeichen 1 ist ein Stück eines Absperrelements bezeichnet worden, das unter Ausübung einer Dichtkraft an der gekrümmten Dichtungszone 4 anliegt. In gestrichelter Form ist die Situation der Verformung des Federstahlblechstreifens 2 durch eine starke thermische Dehnung dargestellt worden. Unter dem Druck des Absperrelements 1 wird die Dichtungszone 4 nach unten verschoben, so daß es einerseits zu einer Vergrößerung des Winkels im Bereich des Dachfirstes und andererseits zu einer Verkleinerung der Winkel im Bereich der beiden Biegungen 6 kommt. Man erkennt deutlich, daß die erfindungsgemäße Abdichtvorrichtung trotz ihrer kompakten Bauweise einen sehr großen Federweg zuläßt. Die Federsteifigkeit ist dabei aber noch zu groß, daß trotz großer Rauchgasgeschwindigkeiten keine unzulässigen Schwingungen des Federstahlblechstreifens 2 eintreten, die zu seiner vorzeitigen Zerstörung führen könnten.Hollow profile, the cross section of which is essentially diamond-shaped and whose clamping edges form, as it were, a foot at a corner of the rhombus of the cross section, so that the sealing device can be easily installed. In the illustrated embodiment, the two terminal strips 10, 1 1 each have a rounded longitudinal edge, the radius of curvature of which is adapted to the radius of curvature of the concave bend 8. The two terminal strips 10, 1 1 extend with their rounded longitudinal edge into the region of the bend 8. The reference number 1 denotes a piece of a shut-off element which bears against the curved sealing zone 4 while exerting a sealing force. In dashed form is the situation of the deformation of the spring steel sheet strip 2 due to a strong thermal expansion has been shown. Under the pressure of the shut-off element 1, the sealing zone 4 is shifted downward, so that on the one hand there is an increase in the angle in the area of the roof ridge and on the other hand there is a decrease in the angle in the area of the two bends 6. It can be clearly seen that the sealing device according to the invention allows a very large spring travel despite its compact design. The spring stiffness is still too great that, despite high flue gas speeds, no inadmissible vibrations of the spring steel sheet strip 2 occur, which could lead to its premature destruction.
Die in Fig. 2 dargestellte Dichtvorrichtung gleicht weitestgehend der Ausführungsform der Fig. 1. Sie unterscheidet sich lediglich darin, daß die beiden Klemmleisten 10, 1 1 mit ihrem gerundeten Kanten nicht bis in den Bereich der konkaven Biegungen hineinreichen, sondern kurz davor enden. Auf diese Weise kann die Federsteifigkeit gezielt verringert werden. Umgekehrt könnte die Federsteifigkeit bei Bedarf beiThe sealing device shown in Fig. 2 largely resembles the embodiment of Fig. 1. It differs only in that the two terminal strips 10, 1 1 with their rounded edges do not extend into the area of the concave bends, but end shortly before. In this way, the spring stiffness can be reduced in a targeted manner. Conversely, the spring stiffness could, if necessary
Verwendung des gleichen Federstahlblechstreifens 2 deutlich erhöht werden, wenn die beiden Klemmleisten 10, 1 1 , beispielsweise in Form eines der Kontur des Federstahlblechstreifens 2 angepaßten Winkelprofils nach oben hin in den Bereich der Seitenflächen 7 hinein verlängert würden. Durch eine Verringerung des Abstandes der beiden Spannränder 3 voneinander wird ebenfalls eine Verringerung derUse of the same spring steel sheet strip 2 can be increased significantly if the two clamping strips 10, 1 1, for example in the form of an angle profile adapted to the contour of the spring steel sheet strip 2, were extended upward into the region of the side faces 7. A reduction in the distance between the two clamping edges 3 also results in a reduction in the
Federsteifigkeit erzielt, während die Vergrößerung dieses Abstandes zu einer Erhöhung der Federsteifigkeit führt. Ein Extremfall in dieser Hinsicht ist in Fig. 3 dargestellt. Hierbei haben die beiden Spannränder 3 einen Abstand voneinander, der der Breite des Dichtungselements entspricht. Die beiden Seitenflächen 7 sind jeweils vollständig eben ausgeführt, weisen also keine konkave Biegung auf.Spring stiffness achieved, while increasing this distance leads to an increase in spring stiffness. An extreme case in this regard is shown in FIG. 3. Here, the two clamping edges 3 are at a distance from one another which corresponds to the width of the sealing element. The two side surfaces 7 are each completely flat, that is to say do not have a concave bend.
In Fig. 4 ist die erfindungsgemäße Abdichtvorrichtung, deren Ausführung der Fig. 1 entspricht, im montierten Zustand dargestellt. Die Spannränder des Federstahlblechstreifens 2 sind mittels einer Schraube 12 zwischen den beiden Klemmleisten 10, 1 1 und dem dazwischen angeordneten Hohlprofil 9 eingespannt.4 shows the sealing device according to the invention, the design of which corresponds to FIG. 1, in the assembled state. The clamping edges of the spring steel sheet strip 2 are clamped by means of a screw 12 between the two terminal strips 10, 1 1 and the hollow profile 9 arranged between them.
Während in der Klemmleiste 10 und in dem Hohlprofil 9 lediglich einfache Durchgangsbohrungen für die Schraube 12 vorgesehen sind, weist die Klemmleiste 1 1 eine für das Gewinde der Schraube 12 passende Gewindebohrung auf. Dadurch kann die Abdichtvorrichtung ohne Verwendung einer gesonderten Mutter in vormontierter Form bereitgestellt werden. Üblicherweise wird diese Dichtung in vorgegebene Teillängen von z.B. 2m Länge angefertigt und erst bei der Montage zur gewünschten Gesamtlänge in der jeweiligen Rauchgasarmatur zusammengesetzt. Das Anlagenteil, an dem die Abdichtvorrichtung angebracht werden soll, ist in Fig. 4 mit dem Bezugszeichen 13 versehen. Es weist wie das Hohlprofil 9 und die Klemmleiste 10 eine für die Schraube 12 geeignete Durchgangsbohrung auf. Die Schraube 12 ist wesentlich länger ausgeführt, als dies an sich zur Verschraubung mit der Gewindebohrung in der Klemmleiste 11 notwendig wäre. Daher können die freien Enden der Schraube 12 in diese Durchgangsbohrungen am Anlagenteil 13 eingesteckt und mittels Muttern 14 fest mit diesem verspannt werden. While only simple through-holes are provided for the screw 12 in the terminal strip 10 and in the hollow profile 9, the terminal strip 11 has a threaded hole suitable for the thread of the screw 12. As a result, the sealing device can be provided in a preassembled form without using a separate nut. Usually this seal is given in predefined Part lengths of, for example, 2m length made and only assembled during assembly to the desired overall length in the respective flue gas valve. The plant part to which the sealing device is to be attached is provided with the reference symbol 13 in FIG. 4. Like the hollow profile 9 and the terminal strip 10, it has a through hole suitable for the screw 12. The screw 12 is made much longer than would be necessary for screwing with the threaded hole in the terminal block 11. Therefore, the free ends of the screw 12 can be inserted into these through holes on the system part 13 and firmly clamped to the latter by means of nuts 14.
BezugszeichenlisteReference list
1 Absperrelement1 shut-off element
2 Federstahlblechstreifen2 spring steel sheet strips
3 Spannränder3 rims
4 Dichtungzone4 sealing zone
5 Dachflächen5 roof areas
6 Biegung (konvex)6 bend (convex)
7 Seitenfläche7 side surface
8 Biegung (konkav)8 bend (concave)
9 Hohlprofil9 hollow profile
10 Klemmleiste10 terminal block
11 Klemmleiste11 terminal block
12 Schraube12 screw
13 Anlagenteil13 plant part
14 Mutter 14 mother

Claims

Patentansprüche claims
1. Vorrichtung zur Abdichtung der Berührungszone zwischen zwei relativ zueinander beweglichen Anlagenteilen, von denen der eine ein Absperrelement1. Device for sealing the contact zone between two relatively movable system parts, one of which is a shut-off element
(1) und der andere einen Dichtsitz bildet, enthaltend wenigstens ein Dichtungselement, das durch einen sich entlang der Berührungszone erstreckenden Federstahlblechstreifen (2) gebildet ist, der hohlprofilförmig gebogen ist und dessen beide Längskanten Spannränder (3) bilden, die an einem der beiden Anlagenteile mit einem Abstand zueinander, der mindestens(1) and the other forms a sealing seat, containing at least one sealing element, which is formed by a spring steel sheet strip (2) extending along the contact zone, which is bent in the shape of a hollow profile and the two longitudinal edges of which form tensioning edges (3), which on one of the two system parts at a distance from each other that is at least
10% der Breite des Dichtungselements beträgt, eingespannt sind, wobei das Dichtungselement in der Schließstellung des Absperrelements mit einer gegenüber dem Dichtsitz konvex gekrümmten Dichtungszone (4) durch Federwirkung mit einer Dichtkraft an dem Dichtsitz anliegt, dadurch gekennzeichnet,10% of the width of the sealing element is clamped, the sealing element in the closed position of the shut-off element with a sealing zone (4) which is convexly curved with respect to the sealing seat, rests against the sealing seat by a spring action with a sealing force, characterized in that
- daß die Dichtungszone (4) des Federstahlblechstreifens (2) durch plastische Verformung in Form eines Dachfirstes mit sich beidseitig anschließenden Dachflächen (5) gebogen ist,- That the sealing zone (4) of the spring steel sheet strip (2) is bent by plastic deformation in the form of a roof ridge with roof surfaces (5) adjoining on both sides,
- daß die beiden Dachflächen (5) in einem Winkel von 60° bis 160° zueinander ausgerichtet sind und- That the two roof surfaces (5) are aligned at an angle of 60 ° to 160 ° to each other and
- daß an der dem Dachfirst abgewandten Längskante der beiden Dachflächen (5) jeweils eine weitere durch plastische Verformung erzeugte, nach außen hin konvexe Biegung (6) angebracht ist, an die sich eine zumindest in einem ersten Teilstück ebene Seitenfläche (7) anschließt, an deren freien Längskante jeweils der Spannrand (3) angeordnet ist.- That on the ridge facing away from the longitudinal edge of the two roof surfaces (5) each have a further plastic deformation, outwardly convex bend (6) is attached, which is followed by an at least in a first section flat side surface (7) the free longitudinal edge of the clamping edge (3) is arranged.
2. Vorrichtung nach Anspruch 1 dadurch gekennzeichnet, daß die Flächen der Spannränder (3) parallel zueinander angeordnet sind.2. Device according to claim 1, characterized in that the surfaces of the clamping edges (3) are arranged parallel to one another.
3. Vorrichtung nach einem der Ansprüche 1 bis 2 dadurch gekennzeichnet, daß in den beiden Seitenflächen (7) jeweils eine weitere Biegung (8) in Längsrichtung des Federstahlblechstreifens (2) durch plastische Verformung angebracht ist, die nach außen hin konkav ausgebildet ist. 3. Device according to one of claims 1 to 2, characterized in that in the two side surfaces (7) each have a further bend (8) in the longitudinal direction of the spring steel sheet strip (2) is attached by plastic deformation, which is concave towards the outside.
4. Vorrichtung nach einem der Ansprüche 1 bis 3 dadurch gekennzeichnet, daß die beiden Dachflächen (5) in einem Winkel von 90° bis 130°, insbesondere in einem Winkel von 105° bis 115°, zueinander ausgerichtet sind.4. Device according to one of claims 1 to 3, characterized in that the two roof surfaces (5) are aligned at an angle of 90 ° to 130 °, in particular at an angle of 105 ° to 115 °.
5. Vorrichtung nach einem der Ansprüche 1 bis 4 dadurch gekennzeichnet, daß der Abstand der beiden Spannränder (3) voneinander mindestens 20%, insbesondere mindestens 30%, der Breite des Dichtungselements beträgt.5. Device according to one of claims 1 to 4, characterized in that the distance between the two clamping edges (3) from one another is at least 20%, in particular at least 30%, of the width of the sealing element.
6. Vorrichtung nach einem der Ansprüche 1 bis 5 dadurch gekennzeichnet, daß der Abstand der beiden Spannränder (3) voneinander höchstens 50% der Breite des Dichtungselements beträgt.6. Device according to one of claims 1 to 5, characterized in that the distance between the two clamping edges (3) from each other is at most 50% of the width of the sealing element.
7. Vorrichtung nach einem der Ansprüche 1 bis 6 dadurch gekennzeichnet, daß der Raum zwischen den beiden Spannrändern (3) durch ein Voll- oder Hohlprofil (9) mit rechteckigem Querschnitt ausgefüllt ist.7. Device according to one of claims 1 to 6, characterized in that the space between the two clamping edges (3) by a solid or hollow profile (9) is filled with a rectangular cross-section.
8. Vorrichtung nach Anspruch 7 dadurch gekennzeichnet, daß die beiden Spannränder (3) zwischen dem Voll- oder Hohlprofil (9) und zwei Klemmleisten (10, 1 1 ) eingespannt sind.8. The device according to claim 7, characterized in that the two clamping edges (3) between the solid or hollow profile (9) and two clamping strips (10, 1 1) are clamped.
9. Vorrichtung nach Anspruch 8 dadurch gekennzeichnet, daß die Einspannungen als Schraubverbindungen ausgeführt sind, wobei die eine Klemmleiste (10) jeweils Durchgangsbohrungen und die andere9. The device according to claim 8, characterized in that the clamps are designed as screw connections, the one terminal block (10) each having through holes and the other
Klemmleiste (11) jeweils Gewindebohrungen für die Schrauben (12) aufweisen und die Schrauben (12) zur Befestigung des Dichtungselements an einem der Anlagenteile (13) mittels einer Mutter (14) um eine freie Gewindelänge durch die Gewindebohrungen hindurchragen. Terminal strip (11) each have threaded holes for the screws (12) and the screws (12) for fastening the sealing element to one of the system parts (13) project through a free thread length through the threaded holes by means of a nut (14).
10. Vorrichtung nach einem der Ansprüche 8 bis 9 dadurch gekennzeichnet, daß die Klemmleisten (10, 11) an der an dem Spannrand (3) anliegenden Seite jeweils eine gerundete Längskante aufweisen.10. Device according to one of claims 8 to 9, characterized in that the clamping strips (10, 11) on the side adjacent to the clamping edge (3) each have a rounded longitudinal edge.
11. Vorrichtung nach Anspruch 10 dadurch gekennzeichnet, daß die gerundete Längskante jeweils im Bereich der konkaven Biegung (8) des Federstahlblechstreifens (2) liegt.11. The device according to claim 10, characterized in that the rounded longitudinal edge is in each case in the region of the concave bend (8) of the spring steel sheet strip (2).
12. Vorrichtung nach einem der Ansprüche 3 bis 11 dadurch gekennzeichnet, daß das ebene Teilstück der Seitenflächen (7) zwischen der konvexen (6) und der konkaven Biegung (8) zur Erhöhung der Federsteifigkeit über einen Teilbereich von außen abgestützt ist. 12. Device according to one of claims 3 to 11, characterized in that the flat section of the side surfaces (7) between the convex (6) and the concave bend (8) is supported to increase the spring stiffness over a portion from the outside.
EP99936278A 1998-06-19 1999-05-12 Sealing device Expired - Lifetime EP1030986B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19828896 1998-06-19
DE19828896A DE19828896C1 (en) 1998-06-19 1998-06-19 Seal for pivoting door or glazing panel in motor vehicle
PCT/DE1999/001498 WO1999067554A1 (en) 1998-06-19 1999-05-12 Sealing device

Publications (2)

Publication Number Publication Date
EP1030986A1 true EP1030986A1 (en) 2000-08-30
EP1030986B1 EP1030986B1 (en) 2004-02-04

Family

ID=7872340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99936278A Expired - Lifetime EP1030986B1 (en) 1998-06-19 1999-05-12 Sealing device

Country Status (12)

Country Link
EP (1) EP1030986B1 (en)
JP (1) JP2002519594A (en)
KR (1) KR20010023022A (en)
AT (1) ATE259035T1 (en)
AU (1) AU5148299A (en)
BR (1) BR9906545A (en)
CA (1) CA2300928A1 (en)
DE (2) DE19828896C1 (en)
IL (1) IL134573A0 (en)
PL (1) PL338712A1 (en)
TR (1) TR200000434T1 (en)
WO (1) WO1999067554A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19906174C1 (en) 1999-02-05 2000-05-18 Mannesmann Ag Seal for valve flaps in motor vehicle exhaust duct has polygonal seals with sliding steel sections reinforcing corners of polygonal section
DE19949370A1 (en) * 1999-10-13 2001-04-19 Janich Gmbh & Co Sealing device
FR3011056B1 (en) * 2013-09-24 2019-05-24 Jst Transformateurs SEALING RETENTION METHOD, BOLTING DEVICE AND POWER TRANSFORMER

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2502240A1 (en) * 1975-01-21 1976-07-22 Steege & Janich Kg SHUT-OFF DEVICE FOR PIPELINES
DE3815402A1 (en) * 1988-05-05 1989-11-16 Pks Engineering DEVICE FOR SEALING
DE4204516C1 (en) * 1992-02-15 1993-09-02 Langerbein-Scharf Gmbh & Co. Kg, 4700 Hamm, De Gas-conduit stop valve - has U=section rust-proof-steel distance-strip securing ends of U=shaped sealing strip and enclosing base strip
DE4423330C2 (en) * 1994-06-22 1996-06-05 Mannesmann Ag Shut-off valve for flue gases
DE19521915A1 (en) * 1995-06-09 1996-12-12 Mannesmann Ag Device for sealing between moving system parts
DE19521916A1 (en) * 1995-06-09 1996-12-12 Mannesmann Ag Device for sealing between moving system parts

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9967554A1 *

Also Published As

Publication number Publication date
AU5148299A (en) 2000-01-10
TR200000434T1 (en) 2000-09-21
JP2002519594A (en) 2002-07-02
BR9906545A (en) 2000-08-29
IL134573A0 (en) 2001-04-30
WO1999067554A1 (en) 1999-12-29
DE19828896C1 (en) 1999-09-09
PL338712A1 (en) 2000-11-20
KR20010023022A (en) 2001-03-26
CA2300928A1 (en) 1999-12-29
EP1030986B1 (en) 2004-02-04
DE59908465D1 (en) 2004-03-11
ATE259035T1 (en) 2004-02-15

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